Can be abused. Those quests that have a sort of cinematic effect and spawn monsters to aggro on an object or you, for an example. They make it so easy to complete journal kills and get exp cards. You can lose on purpose, so…
As anything that can be abused, I think it wouldn’t hurt to make such a change.
Thank you 
Uuuuh… so what?
How is camping those quests in your own private instance any different from just camping the mobs in the world? Hell, if people do that it means the mobs out in the world are easier to farm for other people.
Who cares, seriously?
It’s just a tiny bunch of EXP cards anyway.
It’s not about doing it in every map, but instead for some monsters that have horrid spawn rates. I don’t think it’s beautiful to lose a quest on purpose to progress faster, but I agree it’s obviously the lowest of the priorities right now.